The North Virginia Army lost many of its officers. The Confederates disdained Maryland after this battle.
The North felt the war had shifted in their favor.
Lincoln decided to deliver the Emancipation Proclamation.
Europe had been close to mediation on behalf of the South, but after Antietam they backed away for good. However, France did try for a while to persuade England and Russia to help the South and restore the cotton shipments.
Beginning Of The End
The Emancipation Proclamation announced a new war aim that foreshadowed universal emancipation.
Britain now adopted pro-Union resolutions. The anti-slavery position gave the United States a substantial foothold in Europe.
Lincoln suspended the writ of habeas corpus and authorized military trials for rebels and their abbetors.